Electrically-operated edge-driven roll



Dec. 9, 1930.

F. MULLER 1,784,304

ELECTRICALLY OPERATED EDGE DRIVEN ROLL 5 Filed July 2, 1928 y \4 fi L I Inventor RHZler:

iq u u Attorney;

Patented Dec. 9, 930

rarrz monnna, or nursnune,

GERMANY, ASSIGNOB TO DEMAG LKTIENGESELLSCHAIT,

OF DUISB'D'RG, GERMANY z nLEcrBIoeLLY-ormrnn EDGE-Damn nonr.

Application filed July 2, 1928. Serial 110. 289,898.

4 It has become the practice to provide an .electrical drive separately for each roll, as used particularly in rolling-mills. It has. been proposed to construct the roll itself as the rotor of a driving motor or to connect it rigidly with the rotor. Not only does this involve constructive difiiculties, but it has the disadvantage that the considerable heat generated in the electrical parts leads very easily to breakdowns, consequently the earlier construction has been reverted to, viz, the motor is arranged laterally of the rolls and is connected to them by gearing.

The present invention involves the use of means for driving rolls of the last-mentioned g ccording to the invention, 'in the use of the known stationary roll spindle one of the axial su ports at the same time serves to receive the motor shaft, which is provided at its outer end with a pinion that'engages in the internal teeth of the roll. The construction may be such that the motor casing is provided with a projecting as a bearing for the motor sha the projectfitted within the support of ing part being the roll spindle. dismantling the motor,

r oll itself may remain tion.

when required, as the in the operative posi- The accompanying drawing illustrates'diagrammatically one constructlon according to the invention b way of example. a The roll is enoted 1 and the stationary spindle 2. The s'up ort 4. for the spindle 2, which is disposed a 3 is, provided, below the end of the s mdle 2, with a cylindrical bore 5, throug which passes the motor shaft 6 carrying the pinion 7.

Iclaimzmills, provided with a stationary spindle, a

support forthe said spindle; a driving motor having a casing'lwith an axial extension of the casing serving as bearin .for the motor to shaftandto extend through t e said support art that acts The motor casm 3 is provided with a 'prof1. electrically driven roll for rolling a pinion upon the motor shaft, and internal teeth upon the roll with which said pinion engages.

2. An electrically driven roll for rolling mills, provided with a stationary spindle, a support for the said spindle having an opening parallel with the axis of-the sald spindle, a raving motor having a casing with an axial extension of the casing adapted to be fitted into the opening of the said support and serving as a bearing for the motor shaft, a pinion upon an extension of the motor shaft, and

- internal teeth upon theroll with which the said pinion engages.

3. An electrically driven roll for rolling mills, provided with a stationary spindle, a support for the said spindle, internal teeth provided on the inner periphery. of the roll at the adjacent end, a driving motor carried by the said support, said motor having the shaft extended axially through the said support, and apinion upon the said motor shaft gearing with the teet upon the said roll.

FRITZ MGLLER.

This simplifies the work of I Jacent the driving motor 

